Excel offers no such constraint. If someone is determined to enter bad data, they can simply paste values over a validated ...
In this excerpt from the new book 'Speak Data,' the Wharton professor and best-selling author shares his thoughts on how we ...
The @ symbol can also appear in regular formulas outside of tables when Excel thinks you're trying to reference a single value from a range. If you see it pop up unexpectedly, it usually means Excel ...